# Copyright 2021 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Valuation methods common to all models."""

import enum


@enum.unique
class ValuationMethod(enum.Enum):
  """Valuation methods.

  * `ANALYTIC`: Analytic valuation.
  * `MONTE_CARLO`: Valuation using Monte carlo simulations.
  * `FINITE_DIFFERENCE`: Valuation using finite difference methods/PDEs.
  """
  ANALYTIC = 1
  MONTE_CARLO = 2
  FINITE_DIFFERENCE = 3
